US 9,810,359 B2
Pipe coupling
Wayne Spears, Sylmar, CA (US); Robert Wayne Spears, II, Sylmar, CA (US); and David E. Littleton, Santa Clara, CA (US)
Assigned to Spears Manufacturing Co., Sylmar, CA (US)
Filed on Oct. 6, 2015, as Appl. No. 14/876,791.
Claims priority of provisional application 62/060,411, filed on Oct. 6, 2014.
Prior Publication US 2016/0097477 A1, Apr. 7, 2016
Int. Cl. F16L 37/00 (2006.01); F16L 37/091 (2006.01)
CPC F16L 37/091 (2013.01) 20 Claims
OG exemplary drawing
1. A pipe coupling comprising:
a) a cylindrical body for accepting and retaining ends of a pair of spaced apart pipe sections, the cylindrical body comprising two opposed ends, the two opposed ends each comprising an interior surface;
b) an end connector attached to each of the opposed ends of the cylindrical body, each end connector comprising an axially facing interior surface and a radially facing interior surface, the axially facing interior surface having a groove formed therein;
c) a gasket disposed within an indentation defined within the interior surface of each of the opposed ends of the cylindrical body;
d) a gasket retaining ring disposed between each end connector and the corresponding gasket, each gasket retaining ring having a shoulder disposed within the groove of the corresponding end connector; and
e) a gripper washer disposed between each gasket retaining ring and end connector, each gripper washer comprising a concentric interior periphery composed of a plurality of gripping fingers;
wherein the shoulder of each of the gasket retaining rings prevents the corresponding gripper washer from contacting the radially facing interior surface of the corresponding end connector.